Qtcpsocket Server timer, multi-threaded combination

Qtcpsocket when writing a server program, it is necessary to periodically send monitoring data to the client while responding to client requests.

The problem is: Qtcpsocket can only be used in the same thread, and the timer will run in the main threads

Solution: Send a signal to the encapsulated client data processing socket in the timer and connect the signal to the operation in the socket in the thread.

Clientsocket.h#ifndef clientsocket_h#define clientsocket_h#include <QTcpSocket> #include <QTimer> Class Clientsocket:public Qtcpsocket{q_objectpublic:clientsocket (Qobject *parent); ~clientsocket (); signals:void Sigreaddata (const QString &data);p ublic slots:void slottimeout (); void Slotreadyread (); void Slotwritedata (const qstring& data);p rivate:qtimer* _timer;}; #endif//clientsocket_h//clientsocket.cpp#include "Clientsocket.h" #include <qdebug>clientsocket:: Clientsocket (Qobject *parent): Qtcpsocket (parent) {Connect (this, &qabstractsocket::readyread, this, & Clientsocket::slotreadyread);//_timer = new Qtimer (this);//connect (_timer, &qtimer::timeout, this, & Clientsocket::slottimeout);//_timer->start (2000);} Clientsocket::~clientsocket () {}void clientsocket::slotreadyread () {QString recv = ReadAll (); Emit sigreaddata (recv);} void Clientsocket::slottimeout () {Write (Qbytearray (This->objectname (). tostdstring (). C_STR ()));} void Clientsocket::slotwritedata(const qstring& data) {Write (Data.tostdstring (). C_STR ()); Flush ();} Serverlistener.h#ifndef serverlistener_h#define serverlistener_h#include <QTcpServer> #include <qtimer > #include "clientsocket.h" Class Serverlistener:public Qtcpserver{q_objectpublic:serverlistener (Qobject *parent) ; ~serverlistener (); virtual void incomingconnection (qintptr handle); signals:void sigwritedata (const qstring& Data );p ublic slots:void slotreaddata (const qstring& data), void Slotsendmmidatatimeout ();p rivate:clientsocket *_ Clientsock; Qtimer* _timer;}; #endif//Serverlistener_h//serverlistener.cpp#include "Serverlistener.h" #include <QThread> #include < Qdebug>serverlistener::serverlistener (Qobject *parent): Qtcpserver (parent) {}serverlistener::~serverlistener () {}void serverlistener::incomingconnection (qintptr handle) {_clientsock = new Clientsocket (0x00);_clientsock-> Setsocketdescriptor (handle); Qthread *thread = new Qthread (this); _clientsock->movetothread (thread); _timer = new QTimer (This): Connect (_clientsock, &clientsocket::sigreaddata, this, &serverlistener::slotreaddata); connect (This, &serverlistener::sigwritedata, _clientsock, &clientsocket::slotwritedata); Connect (_timer, & Qtimer::timeout, this, &serverlistener::slotsendmmidatatimeout); _timer->start (+); Thread->start ();} void Serverlistener::slotreaddata (const qstring& data) {qdebug () << data;} void Serverlistener::slotsendmmidatatimeout () {QString data = qstring::fromlocal8bit ("Ryan data");//_clientsock-> Write (Data.tostdstring (). C_STR ()); If you are here, you will get an error emit serverlistener::sigwritedata (data);} Main.cpp#include "Serverlistener.h" #include <QtCore/QCoreApplication> #include <qhostaddress>int main (int argc, char *argv[]) {Qcoreapplication A (argc, argv); Serverlistener Listener (0x00); Listener.listen (Qhostaddress::any, 6000); return a.exec ();}

Qtcpsocket Server timer, multi-threaded combination